Uniden UM435 Marine Radio Owner's Manual

About this manual

The Uniden UM435 is a submersible marine radio designed for use in the U.S., Canada, and international waters. It features advanced Digital Selective Calling (DSC) Class D functions, a large dot matrix display, and the ability to boost transmitter power from 1 watt to 25 watts. The device includes a memory scan mode and triple watch operation to monitor Coast Guard distress channels 16 and 9 in the background.

What's inside

• Making a Voice Distress Call
• Getting Started
• Normal Mode Operation
• Using Digital Selective Calling (DSC)
• Making DSC Calls
• Weather Mode
• Maintenance and Troubleshooting
• Specifications
• Regulations and Safety Warnings
• Antenna Selection and Installation

Specifications

Frequently asked questions

How do I make a voice distress call?

Press and hold the DISTRESS button for three seconds, then speak slowly and clearly into the microphone to transmit your boat's location and situation.

What is the purpose of the 16/9-TRI button?

It switches the radio to Channel 16 for voice distress calls or enables Triple Watch operation to monitor channels 16 and 9.

Can the radio be submerged in water?

Yes, it complies with IPX8 submersible standards, allowing it to be submerged in 1.5 meters of water for 30 minutes without damage.